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via by Unknown author, 1 year ago
java.lang.NullPointerException: 	at PC_InvUtils.groupStacks(	at PCma_BlockHarvester.harvestBlocks(	at PCma_BlockHarvester.a(	at xd.a(	at xd.c(	at net.minecraft.client.Minecraft.k(	at net.minecraft.client.Minecraft.x(	at	at Source)